Measurement of visual sustained attention in schizophrenia using signal detection analysis and a newly developed computerized CPT task.
Sustained attention in schizophrenia was assessed with a newly developed, computer-controlled, modified version of the continuous performance test in which specific attentional effects can be empirically distinguished from nonspecific factors by signal detection theory (SDT). Results indicated that patients showed a more rapid decline in specific attentional, but not nonspecific processes, as measured by SDT parameters of A' and B", respectively.
Nestor
P G
PG
Department of Psychiatry, Harvard Medical School, Brockton VAMC, MA 02401.
Faux
S F
SF
McCarley
R W
RW
Shenton
M E
ME
Sands
S F
SF
D000328:Adult; D001143:Arousal; D001288:Attention; D006801:Humans; D008297:Male; D008838:Microcomputers; D008875:Middle Aged; D010364:Pattern Recognition, Visual; D011581:Psychological Tests / Q000295:instrumentation*; D011597:Psychomotor Performance; D011930:Reaction Time; D012559:Schizophrenia / Q000175:diagnosis*; D012565:Schizophrenic Psychology